The ADUM1402ARWZ is part of Analog Devices Inc. (ADI), which is a renowned semiconductor company. This specific part, the ADUM1402ARWZ, is a digital isolator used for signal isolation between digital circuits. It is designed to isolate low-voltage and high-voltage systems while providing data transmission without compromising electrical safety.
Pin Function Specifications and Circuit Principle of ADUM1402ARWZ
Package Type:
SOIC-16 (Small Outline Integrated Circuit, 16 pins)Pin Count: 16 pins
The ADUM1402ARWZ comes in a 16-pin SOIC package. Here is the detailed explanation of each pin function for this device:
Pin Number Pin Name Function Description 1 VDD1 Power supply pin for the primary side (input side) of the isolator. 2 GND1 Ground for the primary side of the isolator. 3 IN1A Input data signal, logic level ‘A’ from the primary side. 4 IN1B Input data signal, logic level ‘B’ from the primary side. 5 GND2 Ground for the secondary side of the isolator. 6 VDD2 Power supply pin for the secondary side (output side) of the isolator. 7 OUT1A Output data signal, logic level ‘A’ from the secondary side. 8 OUT1B Output data signal, logic level ‘B’ from the secondary side. 9 NC No connection. This pin is internally unused and can be left floating. 10 NC No connection. This pin is internally unused and can be left floating. 11 NC No connection. This pin is internally unused and can be left floating. 12 NC No connection. This pin is internally unused and can be left floating. 13 NC No connection. This pin is internally unused and can be left floating. 14 NC No connection. This pin is internally unused and can be left floating. 15 NC No connection. This pin is internally unused and can be left floating. 16 VDD2 Power supply pin for the secondary side (output side) of the isolator.Detailed Explanation of the Pin Functions
VDD1 (Pin 1): Provides the primary-side supply voltage, typically 3.3V or 5V, depending on the application. GND1 (Pin 2): This is the ground pin for the primary side of the isolator. It ensures a common reference point for the input signals. IN1A and IN1B (Pins 3 and 4): These pins receive the input signals from the primary side of the isolator. The signals are logic-level inputs that are used to send data to the secondary side. GND2 (Pin 5): The ground reference for the secondary side of the isolator, allowing proper transmission of the output signals. VDD2 (Pin 6): Provides power to the secondary side of the isolator. OUT1A and OUT1B (Pins 7 and 8): These are the output pins on the secondary side of the isolator. They transmit the isolated version of the input signals to the other part of the circuit. NC (Pins 9–16): These pins are not connected internally and should be left floating in the circuit design.Pin Function and FAQs
Here are some commonly asked questions (FAQs) related to the ADUM1402ARWZ:
Q: What is the purpose of the VDD1 pin? A: VDD1 provides power to the primary side of the ADUM1402ARWZ and is necessary for proper operation of the isolator.
Q: What is the function of the GND1 pin? A: GND1 serves as the ground reference for the primary side of the isolator. It ensures the proper signal transmission from the primary side to the secondary side.
Q: What are IN1A and IN1B used for? A: IN1A and IN1B are the input signal pins for the primary side of the isolator. These pins receive logic-level data and convert it for isolation.
Q: What is the role of the VDD2 pin? A: VDD2 powers the secondary side of the isolator, ensuring the output signals are generated correctly.
Q: What are OUT1A and OUT1B used for? A: OUT1A and OUT1B are the output pins of the ADUM1402ARWZ, delivering the isolated version of the input signals.
Q: How should the NC pins be handled? A: The NC pins (Pins 9–16) should be left unconnected in your circuit design as they are internally unused.
Q: What voltage should be applied to VDD1 and VDD2? A: VDD1 and VDD2 should be connected to the appropriate supply voltages, typically 3.3V or 5V, depending on your system's requirements.
Q: Can the ADUM1402ARWZ be used for both low and high-voltage systems? A: Yes, the ADUM1402ARWZ is designed to isolate circuits with different voltage levels safely.
Q: What is the maximum data rate supported by the ADUM1402ARWZ? A: The ADUM1402ARWZ supports data rates up to 25 Mbps, depending on the application.
Q: Can the ADUM1402ARWZ be used in noisy environments? A: Yes, it is ideal for noisy environments due to its ability to provide galvanic isolation and suppress common-mode noise.
Q: What is the isolation voltage rating of the ADUM1402ARWZ? A: The ADUM1402ARWZ provides up to 2500VRMS isolation, ensuring safe operation between different voltage domains.
Q: How is the ADUM1402ARWZ mounted in a circuit? A: The ADUM1402ARWZ is typically mounted on a PCB (printed circuit board) using the SOIC-16 package, which can be soldered using standard methods.
Q: Are there any specific recommendations for PCB layout? A: It's recommended to provide adequate decoupling capacitor s near the VDD pins and to ensure proper routing of the input and output signals to maintain performance.
Q: What kind of protection does the ADUM1402ARWZ offer against overvoltage? A: The ADUM1402ARWZ has built-in protection against overvoltage conditions, offering robust isolation in industrial applications.
Q: Is there a minimum input voltage required for the ADUM1402ARWZ? A: The minimum voltage required for VDD1 and VDD2 is typically around 3.3V.
Q: How can I test the functionality of the ADUM1402ARWZ in my circuit? A: You can test the ADUM1402ARWZ by applying input signals and measuring the corresponding isolated output at OUT1A and OUT1B.
Q: What is the typical current consumption of the ADUM1402ARWZ? A: The typical current consumption for the ADUM1402ARWZ is low, generally in the range of a few milliamps, making it suitable for energy-efficient designs.
Q: How do I ensure signal integrity in my design using the ADUM1402ARWZ? A: To ensure signal integrity, use proper PCB design techniques, including good ground planes and keeping input/output traces short.
Q: Can I use multiple ADUM1402ARWZ devices in the same system? A: Yes, multiple ADUM1402ARWZ isolators can be used in the same system to isolate different parts of the circuit.
Q: What are the environmental conditions for using the ADUM1402ARWZ? A: The ADUM1402ARWZ is designed for operation in a wide temperature range, typically from -40°C to 125°C.
This covers the pin functions, usage, and common questions regarding the ADUM1402ARWZ.